Improvement in steam-pumps



A. PERRY-8L e. w. PERRY.

Improvement in Steam Pumps. N0. 121,658. Patented Dec.5,1871.

/ wtmm z 32mm: 3 w

UNITED STATES PATENT OEEIcE.

ALBERT PERRY, OF NEW PHILADELPHIA, AND GEORGE W. PERRY, OF

' MAHANOY CITY, PENNSYLVANIA.

IMPROVEMENT IN STEAM-PUMPS.

Specification forming part of Letters Patent No. 121,658, dated December5, 1871.

To all whom it may coucern:

Be it known that we, ALBERT PERRY, of New Philadelphia, and GEORGE W.PERRY, of Mahanoy City, in the county of Schuylkill and State ofPennsylvania, have invented a new and Improved Steam-Pump; and we dohereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art to makeand use the same, reference being had to the accompanying drawingforming part of this specification.

Figure l is a side elevation with a section of the tubes. Fig. 2 is alongitudinal sectional elevation. Fig. 3 is a cross-section on line as wof Fig. 1.

Referring to the drawing, I) is the pu1np-barrel5 c, the pipe throughwhich water enters said barrel; d, the valve to the pipe 0; c, a hollowpluir ger working in the pump 1) through a stuflingbox, said plungerbeing connected at its outer end with the extremities of twopiston-rods,f, which reciprocate with the single piston of thesteamcylinder 0. h is an inwardly-opening valve placed inside theplunger 6, near the inner end thereof. t is a pipe fastened at one endto the fixed vertical discharge-pipe j and communicating therewith, theother end of the pipe 6 entering the plunger 6 at its outer end througha stuftingbox 6, so that the latter works outside the said pipe. Whenthe plunger 0 moves forward its valve h opens, and water flows from thebarrel into the plunger, and the plunger displaces so much water fromthe pump while moving forward in the same as to fill not only the pipeibut also the discharge-pipej, causing the water to be ejected from thelatter. As the plunger moves backward its valve h closes, andconsequently displaces the water in the plunger 0 and the pipe t'j withthe same efi'ect as before. The result is, therefore, that the plunger 0produces a continuous discharge from the pipe j. To a pin, It, extendingfrom the outer end of the plunger 0 a crank, l, is jointed, which crankproceeds from a rock-shaft mounted in a block, m, and bearing anothercrank, it, which is jointed to a rod, 0, connected at its other end withan arm, 0, that is hung at its upper end to a standard at q. To theblock m is also pivoted an arm, 1", forked at its lower extremity,between which forks enters the pin 1' from the crank it. To the upperend of the arm 1" is jointed the extremity of a tube, 8, that is placedoutside of a valve-rod, t, with a spiral spring, a, between the tube androd and blocks on the rod at each end of the spring. The rod t entersthe valve-chest v and is connected with the valves therein. 0n the rod2, at each side of the arm 19, is fixed a block, 20. Latches a are hungon the pivot of the arm 1), extending one to each side thereof. A doublewedge, y, fixed to the arm p by a pin slides loosely on the rod it underthe latches a and lifts them alternately. When the plunger 6 is moving,say forward, the pin of the crank a, striking one of the forks of thearm r, throws the upper end of the latter, together with the tube 8,backward. The tube 8 compresses the spring u. The front latch ac,meanwhile, being in contact with the front block to, prevents the rod 1from moving backward with the tube. But the rod 0 at the same time drawsthe wedge y forward until it lifts the front latch 00 above the frontblock 10. This takes place just a moment before the piston in thecylinder 0 reaches the end of its stroke. The spring a thereupon at oncedrives the rod 2 backward, closing the port in rear of the piston andopening that in front of it, which causes the engine to reverse. Thesame operation is repeated near the rear end of the stroke.

We have, therefore, an improved self-operatin g valve-gear.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- 1. The plunger 6, in combination with the pumpb and fixed tube i, constructed and arranged as specified.

2. The arrangement of the tube 8, rod t, spring to, blocks to, latches00, wedge 3 arm 19, rod 0, arm r, cranks u 1, their connectingrock-shaft, and the plunger 6, combined as described.

ALBERT PERRY. GEO. W. PERRY.

Witnesses:

E. L. SEVERE, WILL H. CARTER.

